Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 9 - Review Exercises - Page 691: 7



Work Step by Step

Plug the value of $x$ into the first equation. $(1+y)^2-y^2=9 \implies 1+2y=9$ We get: $y=4$ We will plug the value of $y$ back into the expression of $x$ to find the value of $x$. $x-4 =1 \implies x=5$ Thus, $x=5;y=4$
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